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line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"><span style="line-height:initial; margin:0px; padding:0px"><strong style="margin:0px; padding:0px">ETCR2000型（防雷）鉗形接地電阻測(cè)試儀工作原理</strong><strong style="margin:0px; padding:0px">。</strong></span>行內(nèi)人士都知道鉗形接地電阻測(cè)試儀又名回路電阻測(cè)試儀，用于接地電阻的測(cè)試。本儀表使用全新黑色豪華屏設(shè)計(jì)、電阻電流同屏顯示、同時(shí)還具有數(shù)據(jù)存儲(chǔ)、數(shù)據(jù)查閱、報(bào)警、自動(dòng)關(guān)機(jī)等功能。整機(jī)美觀，量程寬廣，分辨率高，操作便捷，攜帶方便，準(zhǔn)確、可靠、性能穩(wěn)定，抗干擾能力強(qiáng)。而且具有防震、防塵、防潮結(jié)構(gòu)，是電信、電力、氣象、機(jī)房、油田、機(jī)電安裝和維修以及利用電力作為工業(yè)動(dòng)力或能源的工業(yè)企業(yè)部門常用而*的儀表。它適用于測(cè)量各種電信、電力、氣象、機(jī)房、油田、電力配電線路、鐵塔輸電線路、加油站、工廠接地網(wǎng)、避雷針等接地電阻。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"><strong style="margin:0px; padding:0px">由于客戶對(duì)</strong><strong style="margin:0px; padding:0px">（防雷）鉗形接地電阻測(cè)試儀的使用了解不夠全面，造成施工諸多不便。成都蘇特電力為</strong><span style="line-height:initial; margin:0px; padding:0px"><strong style="margin:0px; padding:0px">新老客戶說(shuō)說(shuō)其中原由。</strong></span></p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">儀表結(jié)構(gòu)</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">1. 鉗頭</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">2. 鉗口開合扳機(jī)</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">3. LCD顯示屏</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">4. 電源鍵 <img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507151848_76271.png" style="border:none; margin:0px; max-width:730px; padding:0px; vertical-align:middle" /></p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">5. MODE模式鍵</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">6. AL報(bào)警鍵</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">7. MEM存儲(chǔ)鍵</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">8. SET設(shè)定鍵</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">9. HOLD保持鍵</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">10.校驗(yàn)環(huán)1Ω回路</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">11. 校驗(yàn)環(huán)10Ω回</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">液晶顯示：</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"><img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507152008_54341.png" style="border:none; margin:0px; max-width:730px; padding:0px; vertical-align:middle" /></p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">1. 鉗頭張開符號(hào) 2. 報(bào)警指示符號(hào) 3. 大于符號(hào)</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">4. 交直流指示符號(hào) 5. 數(shù)據(jù)查閱符號(hào) 6. 數(shù)據(jù)存儲(chǔ)符號(hào)</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">7. 噪聲指示符號(hào) 8. 數(shù)據(jù)鎖定符號(hào) 9. 電池電量指示</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">10. 單位指示 11. 四位電阻數(shù)據(jù) 12. 單位指示</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">13. 存儲(chǔ)組數(shù) 14. 四位數(shù)字指示電流</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">特殊符號(hào)說(shuō)明:</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑴. <img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507152430_53939.png" style="border:none; margin:0px; max-width:730px; padding:0px; vertical-align:middle" />鉗口張開符號(hào)，鉗口張開時(shí)，該符號(hào)顯示。此時(shí)，可能人為扣壓扳機(jī)；或鉗口已嚴(yán)重污染，不能再繼續(xù)測(cè)量。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑵.“Er”開機(jī)出錯(cuò)符號(hào)，可能開機(jī)時(shí)扣壓扳機(jī)或鉗口已張開。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑶. <img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507152505_62647.png" style="border:none; margin:0px; max-width:730px; padding:0px; vertical-align:middle" /> 電池電壓低符號(hào)，當(dāng)電池電壓低于5.0V，此符號(hào)顯示，此時(shí)不能保證測(cè)量的準(zhǔn)確度，應(yīng)更換電池。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑷.“OL Ω”符號(hào)，表示被測(cè)電阻超出了鉗表的上量限。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑸.“L0.01Ω”符號(hào)，表示被測(cè)電阻超出了鉗表的下量限。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑹.“OL A”符號(hào)，表示被測(cè)電流超出了鉗表的上量限。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑺. 報(bào)警符號(hào)，當(dāng)被測(cè)量值大于設(shè)定報(bào)警臨界值時(shí)該符號(hào)閃爍顯示，同時(shí)儀表發(fā)出間歇“嘟--嘟--嘟--”聲。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑻. MEM數(shù)據(jù)存儲(chǔ)符號(hào)，保存數(shù)據(jù)時(shí)閃爍顯示。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑼. MR查閱數(shù)據(jù)符號(hào)，在查閱數(shù)據(jù)時(shí)顯示，同時(shí)顯示所存數(shù)據(jù)的編號(hào)。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">⑽.NOISE符號(hào)，當(dāng)被測(cè)試接地回路有較大干擾電流時(shí)此符號(hào)閃爍顯示，同時(shí)儀表發(fā)出“嘟--嘟--嘟--”提示聲。此時(shí)不能保證測(cè)試的準(zhǔn)確性。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"><strong style="margin:0px; padding:0px">了解了產(chǎn)品結(jié)構(gòu)在說(shuō)一說(shuō)工作原理：</strong></p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">電阻測(cè)量原理</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">鉗形接地電阻儀測(cè)量接地電阻的基本原理是測(cè)量回路電阻。見下圖。鉗表的鉗</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">口部分由電壓線圈及電流線圈組成。電壓線圈提供激勵(lì)信號(hào)，并在被測(cè)回路上感應(yīng)一個(gè)電勢(shì)V。在電勢(shì)V的作用下將在被測(cè)回路產(chǎn)生電流I。鉗表對(duì)V及I進(jìn)行測(cè)量，并通過(guò)下面的公式即可得到被測(cè)電阻R。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">R=V/I</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p><img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507152933_85095.png" style="border:none; color:rgb(64, 64, 64); font-family:arial,helvetica,sans-serif; font-size:12px; margin:0px; max-width:730px; padding:0px; vertical-align:middle" /></p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">電阻和接地漏電可以同時(shí)測(cè)量，開機(jī)后按“MODE”鍵切換“電阻+電流”、“電阻”模式。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">中間大數(shù)字顯示“OLΩ”，表示被測(cè)電阻超出了鉗表的上量限。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">中間大數(shù)字顯示“L0.01Ω”，表示被測(cè)電阻超出了鉗表的下量限。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">在“電阻+電流”模式時(shí)，顯示屏右下方顯示電流值，如“0.00mA”，如需測(cè)量電流時(shí)則切換到此模式直接讀取電流值即可。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"><img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507153334_59939.png" style="border:none; margin:0px; max-width:730px; padding:0px; vertical-align:middle" /></p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">電阻+電流模式：</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">測(cè)量電阻值為0.51Ω，</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">保存組數(shù)為1組，被測(cè)回路電流為0.00mA</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">4．報(bào)警設(shè)置</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">開機(jī)后，短按“AL”鍵開啟或者關(guān)閉報(bào)警功能，長(zhǎng)按“SET”鍵可以設(shè)置電阻，電流，電壓報(bào)警值，通過(guò)按“AL”鍵和“MEM”鍵改變當(dāng)前數(shù)字大小，短按“MODE”鍵切換報(bào)警模式，再長(zhǎng)按“SET”鍵保存退出。當(dāng)測(cè)量阻值大于報(bào)警臨界設(shè)定值并開啟報(bào)警功能時(shí)，儀表閃爍“ ”符號(hào)，并發(fā)出“嘟--嘟--嘟--”報(bào)警聲。接地電阻報(bào)警設(shè)置值為200Ω。如下圖：</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"><img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507153356_63839.png" style="border:none; margin:0px; max-width:730px; padding:0px; vertical-align:middle" /></p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">5．?dāng)?shù)據(jù)鎖定</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">開機(jī)后測(cè)量穩(wěn)定后，短按“HOLD”鍵鎖定當(dāng)前顯示數(shù)據(jù)，并保存數(shù)據(jù)，再短按“HOLD”鍵退出鎖定模式。如下圖：</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"><img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507153426_24438.png" style="border:none; margin:0px; max-width:730px; padding:0px; vertical-align:middle" /></p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"> </p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">6．?dāng)?shù)據(jù)存儲(chǔ)/查閱/刪除</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;">開機(jī)后測(cè)量完成時(shí)，短按“HOLD”鍵存儲(chǔ)數(shù)據(jù)“MEM”符號(hào)閃爍一下并自動(dòng)編號(hào)，若存儲(chǔ)已滿，儀表閃爍顯示“MEM”符號(hào)，短按“MEM”鍵進(jìn)入數(shù)據(jù)查閱，存儲(chǔ)數(shù)據(jù)讀取界面“MR”符號(hào)顯示。按“AL”或“SET”鍵以步進(jìn)值為1選擇查閱數(shù)組號(hào)對(duì)應(yīng)數(shù)據(jù)，再短按“MEM”鍵退出查閱。見下圖，左圖為數(shù)據(jù)存儲(chǔ)時(shí)閃爍顯示一下“MEM”符號(hào),當(dāng)前存儲(chǔ)組數(shù)為1組；中圖為數(shù)據(jù)查閱模式，當(dāng)前查閱組數(shù)為1。</p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, Helvetica, sans-serif;"><img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507153456_65049.png" style="border:none; margin:0px; max-width:730px; padding:0px; vertical-align:middle" /><img alt="" src="http://product.testmart.cn/Uploads/image/20190507/20190507153526_73379.png" style="border:none; margin:0px; max-width:730px; padding:0px; vertical-align:middle" /></p><p style="margin: 0px 0px 10px; padding: 0px; line-height: 30px; color: rgb(64, 64, 64); font-family: Arial, 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